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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-06-01 10:59:48 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-06-05 19:22:35 +0200
commitbe65f9ed267fd7d8b3146b7c4be9ecdd3e0aa3ed (patch)
treef9fddf1a58b26a1f2eaf2ed7fa350c1622abbdbb /drivers/staging/lustre/lustre/obdclass/llog_cat.c
parent3b93c0f4b6accb8105152900d7e414593a8b0c79 (diff)
staging: lustre: delete the filesystem from the tree.
The Lustre filesystem has been in the kernel tree for over 5 years now. While it has been an endless source of enjoyment for new kernel developers learning how to do basic codingstyle cleanups, as well as an semi-entertaining source of bewilderment from the vfs developers any time they have looked into the codebase to try to figure out how to port their latest api changes to this filesystem, it has not really moved forward into the "this is in shape to get out of staging" despite many half-completed attempts. And getting code out of staging is the main goal of that portion of the kernel tree. Code should not stagnate and it feels like having this code in staging is only causing the development cycle of the filesystem to take longer than it should. There is a whole separate out-of-tree copy of this codebase where the developers work on it, and then random changes are thrown over the wall at staging at some later point in time. This dual-tree development model has never worked, and the state of this codebase is proof of that. So, let's just delete the whole mess. Now the lustre developers can go off and work in their out-of-tree codebase and not have to worry about providing valid changelog entries and breaking their patches up into logical pieces. They can take the time they have spend doing those types of housekeeping chores and get the codebase into a much better shape, and it can be submitted for inclusion into the real part of the kernel tree when ready. Cc: Oleg Drokin <oleg.drokin@intel.com> Cc: Andreas Dilger <andreas.dilger@intel.com> Cc: James Simmons <jsimmons@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/lustre/lustre/obdclass/llog_cat.c')
-rw-r--r--drivers/staging/lustre/lustre/obdclass/llog_cat.c236
1 files changed, 0 insertions, 236 deletions
diff --git a/drivers/staging/lustre/lustre/obdclass/llog_cat.c b/drivers/staging/lustre/lustre/obdclass/llog_cat.c
deleted file mode 100644
index d9c63adff206..000000000000
--- a/drivers/staging/lustre/lustre/obdclass/llog_cat.c
+++ /dev/null
@@ -1,236 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.gnu.org/licenses/gpl-2.0.html
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2012, 2015, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/obdclass/llog_cat.c
- *
- * OST<->MDS recovery logging infrastructure.
- *
- * Invariants in implementation:
- * - we do not share logs among different OST<->MDS connections, so that
- * if an OST or MDS fails it need only look at log(s) relevant to itself
- *
- * Author: Andreas Dilger <adilger@clusterfs.com>
- * Author: Alexey Zhuravlev <alexey.zhuravlev@intel.com>
- * Author: Mikhail Pershin <mike.pershin@intel.com>
- */
-
-#define DEBUG_SUBSYSTEM S_LOG
-
-#include <obd_class.h>
-
-#include "llog_internal.h"
-
-/* Open an existent log handle and add it to the open list.
- * This log handle will be closed when all of the records in it are removed.
- *
- * Assumes caller has already pushed us into the kernel context and is locking.
- * We return a lock on the handle to ensure nobody yanks it from us.
- *
- * This takes extra reference on llog_handle via llog_handle_get() and require
- * this reference to be put by caller using llog_handle_put()
- */
-static int llog_cat_id2handle(const struct lu_env *env,
- struct llog_handle *cathandle,
- struct llog_handle **res,
- struct llog_logid *logid)
-{
- struct llog_handle *loghandle;
- enum llog_flag fmt;
- int rc = 0;
-
- if (!cathandle)
- return -EBADF;
-
- fmt = cathandle->lgh_hdr->llh_flags & LLOG_F_EXT_MASK;
- down_write(&cathandle->lgh_lock);
- list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
- u.phd.phd_entry) {
- struct llog_logid *cgl = &loghandle->lgh_id;
-
- if (ostid_id(&cgl->lgl_oi) == ostid_id(&logid->lgl_oi) &&
- ostid_seq(&cgl->lgl_oi) == ostid_seq(&logid->lgl_oi)) {
- if (cgl->lgl_ogen != logid->lgl_ogen) {
- CERROR("%s: log " DOSTID " generation %x != %x\n",
- loghandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&logid->lgl_oi), cgl->lgl_ogen,
- logid->lgl_ogen);
- continue;
- }
- loghandle->u.phd.phd_cat_handle = cathandle;
- up_write(&cathandle->lgh_lock);
- rc = 0;
- goto out;
- }
- }
- up_write(&cathandle->lgh_lock);
-
- rc = llog_open(env, cathandle->lgh_ctxt, &loghandle, logid, NULL,
- LLOG_OPEN_EXISTS);
- if (rc < 0) {
- CERROR("%s: error opening log id " DOSTID ":%x: rc = %d\n",
- cathandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&logid->lgl_oi), logid->lgl_ogen, rc);
- return rc;
- }
-
- rc = llog_init_handle(env, loghandle, fmt | LLOG_F_IS_PLAIN, NULL);
- if (rc < 0) {
- llog_close(env, loghandle);
- loghandle = NULL;
- return rc;
- }
-
- down_write(&cathandle->lgh_lock);
- list_add_tail(&loghandle->u.phd.phd_entry, &cathandle->u.chd.chd_head);
- up_write(&cathandle->lgh_lock);
-
- loghandle->u.phd.phd_cat_handle = cathandle;
- loghandle->u.phd.phd_cookie.lgc_lgl = cathandle->lgh_id;
- loghandle->u.phd.phd_cookie.lgc_index =
- loghandle->lgh_hdr->llh_cat_idx;
-out:
- llog_handle_get(loghandle);
- *res = loghandle;
- return 0;
-}
-
-int llog_cat_close(const struct lu_env *env, struct llog_handle *cathandle)
-{
- struct llog_handle *loghandle, *n;
-
- list_for_each_entry_safe(loghandle, n, &cathandle->u.chd.chd_head,
- u.phd.phd_entry) {
- /* unlink open-not-created llogs */
- list_del_init(&loghandle->u.phd.phd_entry);
- llog_close(env, loghandle);
- }
- /* if handle was stored in ctxt, remove it too */
- if (cathandle->lgh_ctxt->loc_handle == cathandle)
- cathandle->lgh_ctxt->loc_handle = NULL;
- return llog_close(env, cathandle);
-}
-EXPORT_SYMBOL(llog_cat_close);
-
-static int llog_cat_process_cb(const struct lu_env *env,
- struct llog_handle *cat_llh,
- struct llog_rec_hdr *rec, void *data)
-{
- struct llog_process_data *d = data;
- struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
- struct llog_handle *llh;
- int rc;
-
- if (rec->lrh_type != LLOG_LOGID_MAGIC) {
- CERROR("invalid record in catalog\n");
- return -EINVAL;
- }
- CDEBUG(D_HA, "processing log " DOSTID ":%x at index %u of catalog "
- DOSTID "\n", POSTID(&lir->lid_id.lgl_oi), lir->lid_id.lgl_ogen,
- rec->lrh_index, POSTID(&cat_llh->lgh_id.lgl_oi));
-
- rc = llog_cat_id2handle(env, cat_llh, &llh, &lir->lid_id);
- if (rc) {
- CERROR("%s: cannot find handle for llog " DOSTID ": %d\n",
- cat_llh->lgh_ctxt->loc_obd->obd_name,
- POSTID(&lir->lid_id.lgl_oi), rc);
- return rc;
- }
-
- if (rec->lrh_index < d->lpd_startcat)
- /* Skip processing of the logs until startcat */
- rc = 0;
- else if (d->lpd_startidx > 0) {
- struct llog_process_cat_data cd;
-
- cd.lpcd_first_idx = d->lpd_startidx;
- cd.lpcd_last_idx = 0;
- rc = llog_process_or_fork(env, llh, d->lpd_cb, d->lpd_data,
- &cd, false);
- /* Continue processing the next log from idx 0 */
- d->lpd_startidx = 0;
- } else {
- rc = llog_process_or_fork(env, llh, d->lpd_cb, d->lpd_data,
- NULL, false);
- }
-
- llog_handle_put(llh);
-
- return rc;
-}
-
-static int llog_cat_process_or_fork(const struct lu_env *env,
- struct llog_handle *cat_llh,
- llog_cb_t cb, void *data, int startcat,
- int startidx, bool fork)
-{
- struct llog_process_data d;
- struct llog_log_hdr *llh = cat_llh->lgh_hdr;
- int rc;
-
- LASSERT(llh->llh_flags & LLOG_F_IS_CAT);
- d.lpd_data = data;
- d.lpd_cb = cb;
- d.lpd_startcat = startcat;
- d.lpd_startidx = startidx;
-
- if (llh->llh_cat_idx > cat_llh->lgh_last_idx) {
- struct llog_process_cat_data cd;
-
- CWARN("catlog " DOSTID " crosses index zero\n",
- POSTID(&cat_llh->lgh_id.lgl_oi));
-
- cd.lpcd_first_idx = llh->llh_cat_idx;
- cd.lpcd_last_idx = 0;
- rc = llog_process_or_fork(env, cat_llh, llog_cat_process_cb,
- &d, &cd, fork);
- if (rc != 0)
- return rc;
-
- cd.lpcd_first_idx = 0;
- cd.lpcd_last_idx = cat_llh->lgh_last_idx;
- rc = llog_process_or_fork(env, cat_llh, llog_cat_process_cb,
- &d, &cd, fork);
- } else {
- rc = llog_process_or_fork(env, cat_llh, llog_cat_process_cb,
- &d, NULL, fork);
- }
-
- return rc;
-}
-
-int llog_cat_process(const struct lu_env *env, struct llog_handle *cat_llh,
- llog_cb_t cb, void *data, int startcat, int startidx)
-{
- return llog_cat_process_or_fork(env, cat_llh, cb, data, startcat,
- startidx, false);
-}
-EXPORT_SYMBOL(llog_cat_process);